METROLOGY METHOD AND APPARATUS, COMPUTER PROGRAM AND LITHOGRAPHIC SYSTEM

Disclosed are a method, computer program and associated apparatuses for metrology. The method includes determining whether a substrate or substrate portion is subject to a process effect. The method comprises: obtaining inspection data comprising a plurality of sets of measurement data, for example...

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Bibliographische Detailangaben
Hauptverfasser: TURNER, Paul Jonathan, TSIATMAS, Anagnostis
Format: Patent
Sprache:eng ; fre ; ger
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Beschreibung
Zusammenfassung:Disclosed are a method, computer program and associated apparatuses for metrology. The method includes determining whether a substrate or substrate portion is subject to a process effect. The method comprises: obtaining inspection data comprising a plurality of sets of measurement data, for example measurement pupils; and obtaining fingerprint data describing a spatial variation of a parameter of interest. An iterative mapping of the inspection data to the fingerprint data is performed. Whether the structure is subject to a process effect is based on the degree to which the iterative mapping converges on a solution.